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1988-1992 Polaris 650
2013-2019 Beta 250 RR
Includes all the necessary hardware needed for mounting
Grommets at front wheel for cable lock (not included)
Pro-X 28.SIS2424-2 Steel Intake Valve and Spring Kit security-covers-alarms-security-systems 1988-1992 Polaris 650Material: Steel Replaces the OEM valves & valve springs. Steel, nitrided valves for increased durability and less wear under extreme conditions. Stronger valve springs deal with the extra weight of the steel valves. Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm. Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM
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